Appaeatus foe use with goal dust



(No Model.) 2 Sheets-Sheet 1. C. WEGBNER. FIRING APPARATUS FOR USE WITH GOAL DUST. No. 511,004.

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No Model.) Y 2 sheets-sheet 2,

' C. WEGENER..

PIRING APPARATUS FOR USE WITH GOAL DUST. No. 511,004.

lPatterned Deo. 19, i893.

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UNITED STATES PATENT EErcE.

CARL VEGENER., OF BERLIN, GERMANY, ASSIGNOR OF ONE-HALF TO PAUL BAUMERT, OF SAME PLACE.

FIRING APPARATUS FOR USE WITH COAL-DUST.

SPECIFICATION forming part of Letters Patent No. 511,004, dated December 19, 1893.

Application tiled March 8, 1893. Serial No. 465,141. (No model.) latented in Luxemburg August 8, 1892, No. 1,668; in Italy September 2, 1892,LXIV, 94:; in Belgium September 5, 1892,No. 101,232, and in Spain September 22, 1892j No. 13,680.

To a/ZZ whom t may concern:

Beit known that I, CARL WEGENEE, asubject of the King of Prussia, and residing at Berlin, in the Kingdom of Prussia, Germany,

have invented certain new and useful Improvements in Firing Apparatus for Use with Goal-Dust, (for which I have obtained patents in Spain, No. 13,680, bearing,- date September 22, 1892; in Luxemburg, No. 1,668,

io bearing date August 8, 1892 5 in Italy, No. 94, Vol. LXIV, bearing date September 2, 1892, and in Belgium, No. 101,232, bearing date September 5, 1892,) of which the following is a specification.

The present invention relates to a class of furnaces described in my Letters Patent No. 475,715, dated May 24, 1892, in which coal dust or other pulverulent fuel is consumed; in this patent a firing chamber of a cylindrizo cal orcouical form has been shown and described, arranged horizontally to be introduced into the open end of the fire iiue ofthe boiler to be heated. The fine fuel is blown or forced into the ignition chamber by the aid 2 5 of steam or air under pressure or a mixture of both.

In the present invent/ion the firing chamber is constructed in the form of an elbow, having its horizontal arm preferably of a conical 3o shape to fit tightly into the mouth of the firing Hue; while the pulverulent fuel is introduced at the top of the vertical arm. The fuel enters into the firing chamber by gravity, assisted only by a ,'blastor the natural draft of the chimney/@f In the accompanying drawings, Figure 1 represents a vertical longitudinal section through the apparatus on the line 22of Fig.

V2; Fig. 2 an end end view, and Fig. 3 a plan 4o of the same.

The pulverulent fuel is supplied into ahopper 'm0 atpthe top of the vertical arm .e2 of the firing chamber a and caused to fall into the latter in the form of a shower of fine dust by means of a horizontal circular sieve or grating in., rocking or oscillating on a vertical axis. This feed grating fmalso disintegrates the coal dust, that may have `become caked. The grating is actuated by the bifurcated 5o arm lo of a bell-crank lever, the other arm k2 being in continuous contact with cam disk m2 secured on the revolving shaft h.

For regulating the introduction ofthe coal dust into the combustion chamber z, the stroke ofthe bell-crank lever k k2 may be 55 controlled by set screw q, which limits the retrograde motion of the lever. This returning motion is eiected with greater velocity than the forward movement caused by the cams m2, a suitable spring s being provided 6o for this purpose. The resulting oscillations of differential velocity are very favorable for the disintegration of the fuel. The rotating shaft 71, may be actuated by any suitable means. To avoid the aid of a special motor, the natural draft of the chimney may be used for driving a little motor-wheel, as shown in the drawings. To such purpose, a spirallywinged wheel-ib is disposed in the orifice of a tube p enteringr the chimney and connected 7c with the shaft h by any appropriate gearing. The shower or spray of coal dust produced by the grating m falls down into the vertical arm z2 of the combustion chamber e. This arm is provided with horizontal rows of airg5 supply-channels m, each row communicating with an exterior annular chamber w fed bya common air-supply-pipe Z and provided with a regulating valve g. By properly regulating the admission of the air to the combustion 8o chamber, a perfectly smokeless combustion of the coal dust maybe obtained. The horizontal arm e" of the chamber z shows a conical exterior shape, appropriate to enter into the mouth of a steam boiler due. The whole apparatus is made portable by being mounted on wheels 7j.

1. The combination with the elbow-shaped combustion chamber having the vertical arm, 9o of a disintegrating and supplying device for coal dust or other fine fuel, adapted to produce a shower of the latter, located at the apex of said arm; the latter being adapted to freely receive the fine fuel or dust falling from said supplying device, and provided with air feeding ports, whereby the dispersion and combustion of the dust are effected, sub stantially as described.

2. The combination with the elbow-shaped roo combustion chamber having a vertically disposed conical arm, of the disintegrating and supplying device for coal dust or other fine fuel adapted to produce a shower of the latter; said device being arranged at thevapex of the cone, so that the latter may receive the fiue fuel which drops down from said dust supplying device; and said vertical arm being provided with air feeding channels for producing the dispersion and combustion of the dust, substantially as described.

3. The combination With an elbow-shaped combustion chamber, air channels issuing from annular chambers and a common air supply pipe, of a bell-crank lever for actuating the rocking disintegrator,a rotating cam and a spring, both moving to and from the lever, and aseb screw, limiting the stroke of the lever, substantially as set forth.

my hand in the presence of two subscribing witnesses. Y CARL WEGENER. Vitnesses:

W. HAUPT,

L. A. EDWARDS. 

